LSXFEIN

I have the eagle stroker kit with a big cam LT headers fast intake fast 90mm tb stainless steal 3 1/2 " exhaust but stock ported heads and stock fuel system and only pulling 400rwhp will heads and fuel system really make a big difference?

With a dyno tune ofcourse

Am i the only one with a 383?

Rise of the Phoenix

iTrader: (27)

You'd have better luck in the internal section. You mean to tell me you have a 383 stroker with a big cam, fast 90 setup and ported heads and are only making 400 rwhp? Something is seriously wrong. It's almost impossible not to make 400 rwhp with just a cam swap. More details on the cam and heads.

conan

iTrader: (5)

6 speed or auto transmission ? What brand was the dyno ?

taman86

iTrader: (19)

More details plz, doesn't sound right. Should at least be around 430.

LSXFEIN

Its a 6 speed and i cant remember off the top of my head the cam specs and for the heads i have the port specs at home ill let you know asap, but i agree with everbody that its not putting out enough hp deffinently something going on...

Im going to ask the guy who didthe dyno tune today! Hope fully its the dyno not putting all numbers? And its a six speed

I agree

djfury05

iTrader: (30)

it should be well over 430 IMO.. there are LS1 stock headed cars putting that out and more..

VandykeT/A

Does the car feel strong? Does it run weird at all? I would think 450 anyway.

LSXFEIN

i will say the car runs strong but i expected a bit more and i do notice an excessive amount of oil burn not really the typical ls1 oil consumption but a bit more....

i agree

mikh338

iTrader: (16)

yeah those numbers are deff low, my LME 370 with trex cam, PC headers and exhaust made 440whp 410tq, stock 241s and ls6 mani.

97ss497

iTrader: (24)

423rwhp 427rwt with stuff in my sig

LSXFEIN

[/IMG]Ok fellas heres the cam specs!

Smokes quite a bit

conan

iTrader: (5)

I would do a leak down test on the motor. If you have smoke and oil consumption, something is going on... Rings, valve seals, ect. The 6 speed trans will always give higher #'s VS a auto. How old is this engine ?

oner

if you feel it runs strong never mind the dyno #'s, what does it do in the 1/4?

LSXFEIN

I very much agree sir with a leak down test! Ima try to do one this week! The engine only has over 27,000 miles...

Deffinently working on that just need a stronger rear

And thanks for all the help so far guys

taman86

iTrader: (19)

I think conan has it right, by I would go ahead and do a compression test and vacuum test as well in that order. When doing the leak down, make sure the cylinder is at TDC on the power stroke and listen for air coming through the oil fill cap, throttle opening, exhaust and look for bubbles in the radiator. Compression should be in the 150's or higher and all should be within 20 psi of eachother. If two cylinders are low together then you have a cylinder sealing issue.

As for smoke, light blue is oil, black is fuel, and white is coolant. If its black then you may have excess fuel consumption or not having good burn. While you're doing the leak down and compression look at your plugs and see if they have black soot or heavy carbon build up. They should be a brownish color. Hope this helps

LSXFEIN

Thanks sure does help alot. Im going to accomplish the tests through out this week most likely starting tomorrow and thursday i will keep you posted thanks again

Midnight02

iTrader: (8)

Good luck with the tests. With the power numbers being down and the smoke issue, something definitely sounds amiss.

taman86

iTrader: (19)

be as thorough as possible with your diagnosis and when posting back. every detail matters when it comes to online diagnosis lol. GL

LSXFEIN

Thanks man ima need it!!!

Will do man!! Just picked up a Compression test tool! Will let you know how that goes first Thanks again!

conan

iTrader: (5)

Good luck, any test results yet ?